[AN/USER] feat: 카카오 로그인 및 토큰 관리(#861)

android/festago/data/src/main/java/com/festago/festago/data/datasource/TokenDataSource.kt

@@ -0,0 +1,8 @@
+package com.festago.festago.data.datasource
+
+import com.festago.festago.data.model.TokenEntity
+
+interface TokenDataSource {
+    var accessToken: TokenEntity?
+    var refreshToken: TokenEntity?
+}

android/festago/data/src/main/java/com/festago/festago/data/datasource/TokenLocalDataSource.kt

@@ -0,0 +1,52 @@
+package com.festago.festago.data.datasource
+
+import android.content.Context
+import android.content.SharedPreferences
+import androidx.security.crypto.EncryptedSharedPreferences
+import androidx.security.crypto.MasterKey
+import com.festago.festago.data.model.TokenEntity
+import com.google.gson.GsonBuilder
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+
+class TokenLocalDataSource @Inject constructor(
+    @ApplicationContext context: Context,
+) : TokenDataSource {
+
+    private val sharedPreference: SharedPreferences by lazy {
+        val masterKeyAlias = MasterKey
+            .Builder(context, MasterKey.DEFAULT_MASTER_KEY_ALIAS)
+            .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
+            .build()
+
+        EncryptedSharedPreferences(context, ENCRYPTED_PREF_FILE, masterKeyAlias)
+    }
+
+    override var accessToken: TokenEntity?
+        get() = sharedPreference.getToken(ACCESS_TOKEN_KEY, null)
+        set(value) {
+            sharedPreference.putToken(ACCESS_TOKEN_KEY, value)
+        }
+
+    override var refreshToken: TokenEntity?
+        get() = sharedPreference.getToken(REFRESH_TOKEN_KEY, null)
+        set(value) {
+            sharedPreference.putToken(REFRESH_TOKEN_KEY, value)
+        }
+
+    private fun SharedPreferences.putToken(key: String, token: TokenEntity?) {
+        val jsonString = GsonBuilder().create().toJson(token)
+        edit().putString(key, jsonString).apply()
+    }
+
+    private fun SharedPreferences.getToken(key: String, default: TokenEntity?): TokenEntity? {
+        val token = getString(key, null) ?: return default
+        return GsonBuilder().create().fromJson(token, TokenEntity::class.java)
+    }
+
+    companion object {
+        private const val ENCRYPTED_PREF_FILE = "encrypted_pref_file"
+        private const val ACCESS_TOKEN_KEY = "access_token_key"
+        private const val REFRESH_TOKEN_KEY = "refresh_token_key"
+    }
+}

android/festago/data/src/main/java/com/festago/festago/data/di/singletonscope/DataSourceModule.kt

@@ -0,0 +1,16 @@
+package com.festago.festago.data.di.singletonscope
+
+import com.festago.festago.data.datasource.TokenDataSource
+import com.festago.festago.data.datasource.TokenLocalDataSource
+import dagger.Binds
+import dagger.Module
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+
+@Module
+@InstallIn(SingletonComponent::class)
+interface DataSourceModule {
+
+    @Binds
+    fun bindsTokenDataSource(localDataSource: TokenLocalDataSource): TokenDataSource
+}

android/festago/data/src/main/java/com/festago/festago/data/di/singletonscope/RepositoryModule.kt

@@ -5,13 +5,15 @@ import com.festago.festago.data.repository.DefaultFestivalRepository
 import com.festago.festago.data.repository.DefaultRecentSearchRepository
 import com.festago.festago.data.repository.DefaultSchoolRepository
 import com.festago.festago.data.repository.DefaultSearchRepository
+import com.festago.festago.data.repository.DefaultUserRepository
 import com.festago.festago.data.repository.FakeBookmarkRepository
 import com.festago.festago.domain.repository.ArtistRepository
 import com.festago.festago.domain.repository.BookmarkRepository
 import com.festago.festago.domain.repository.FestivalRepository
 import com.festago.festago.domain.repository.RecentSearchRepository
 import com.festago.festago.domain.repository.SchoolRepository
 import com.festago.festago.domain.repository.SearchRepository
+import com.festago.festago.domain.repository.UserRepository
 import dagger.Binds
 import dagger.Module
 import dagger.hilt.InstallIn
@@ -44,4 +46,8 @@ interface RepositoryModule {
     @Binds
     @Singleton
     fun bindsBookmarkRepository(bookmarkRepository: FakeBookmarkRepository): BookmarkRepository
+
+    @Binds
+    @Singleton
+    fun bindsUserRepository(userRepository: DefaultUserRepository): UserRepository
 }

android/festago/data/src/main/java/com/festago/festago/data/di/singletonscope/ServiceModule.kt

@@ -1,6 +1,7 @@
 package com.festago.festago.data.di.singletonscope
 
 import com.festago.festago.data.service.ArtistRetrofitService
+import com.festago.festago.data.service.AuthRetrofitService
 import com.festago.festago.data.service.BookmarkRetrofitService
 import com.festago.festago.data.service.FestivalRetrofitService
 import com.festago.festago.data.service.SchoolRetrofitService
@@ -54,4 +55,12 @@ object ServiceModule {
     ): BookmarkRetrofitService {
         return retrofit.create(BookmarkRetrofitService::class.java)
     }
+
+    @Provides
+    @Singleton
+    fun providesAuthRetrofitService(
+        @NormalRetrofitQualifier retrofit: Retrofit,
+    ): AuthRetrofitService {
+        return retrofit.create(AuthRetrofitService::class.java)
+    }
 }

android/festago/data/src/main/java/com/festago/festago/data/dto/user/RefreshRequest.kt

@@ -0,0 +1,8 @@
+package com.festago.festago.data.dto.user
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+class RefreshRequest(
+    val refreshToken: String,
+)

android/festago/data/src/main/java/com/festago/festago/data/dto/user/RefreshResponse.kt

@@ -0,0 +1,9 @@
+package com.festago.festago.data.dto.user
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class RefreshResponse(
+    val accessToken: TokenResponse,
+    val refreshToken: TokenResponse,
+)

android/festago/data/src/main/java/com/festago/festago/data/dto/user/SignInRequest.kt

@@ -0,0 +1,9 @@
+package com.festago.festago.data.dto.user
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+class SignInRequest(
+    val socialType: String,
+    val code: String,
+)

android/festago/data/src/main/java/com/festago/festago/data/dto/user/SignInResponse.kt

@@ -0,0 +1,11 @@
+package com.festago.festago.data.dto.user
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class SignInResponse(
+    val nickName: String,
+    val profileImageUrl: String,
+    val accessToken: TokenResponse,
+    val refreshToken: TokenResponse,
+)

android/festago/data/src/main/java/com/festago/festago/data/dto/user/TokenResponse.kt

@@ -0,0 +1,22 @@
+package com.festago.festago.data.dto.user
+
+import com.festago.festago.data.model.TokenEntity
+import com.festago.festago.domain.model.token.Token
+import kotlinx.serialization.Serializable
+import java.time.LocalDateTime
+
+@Serializable
+data class TokenResponse(
+    val token: String,
+    val expiredAt: String,
+) {
+    fun toDomain() = Token(
+        token = token,
+        expiredAt = LocalDateTime.parse(expiredAt),
+    )
+
+    fun toEntity() = TokenEntity(
+        token = token,
+        expiredAt = expiredAt,
+    )
+}

android/festago/data/src/main/java/com/festago/festago/data/model/TokenEntity.kt

@@ -0,0 +1,14 @@
+package com.festago.festago.data.model
+
+import com.festago.festago.domain.model.token.Token
+import java.time.LocalDateTime
+
+data class TokenEntity(
+    val token: String,
+    val expiredAt: String,
+) {
+    fun toDomain() = Token(
+        token = token,
+        expiredAt = LocalDateTime.parse(expiredAt),
+    )
+}

android/festago/data/src/main/java/com/festago/festago/data/repository/DefaultUserRepository.kt

@@ -0,0 +1,104 @@
+package com.festago.festago.data.repository
+
+import android.content.Context
+import android.content.SharedPreferences
+import com.festago.festago.data.datasource.TokenDataSource
+import com.festago.festago.data.dto.user.RefreshRequest
+import com.festago.festago.data.dto.user.SignInRequest
+import com.festago.festago.data.service.AuthRetrofitService
+import com.festago.festago.data.util.format
+import com.festago.festago.data.util.onSuccessOrCatch
+import com.festago.festago.data.util.runCatchingResponse
+import com.festago.festago.domain.model.token.Token
+import com.festago.festago.domain.repository.UserRepository
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+
+class DefaultUserRepository @Inject constructor(
+    private val authRetrofitService: AuthRetrofitService,
+    private val tokenDataSource: TokenDataSource,
+    @ApplicationContext context: Context,
+) : UserRepository {
+
+    private val authPref: SharedPreferences by lazy {
+        context.getSharedPreferences(AUTH_PREF, Context.MODE_PRIVATE)
+    }
+
+    override suspend fun isSigned() = getRefreshToken().isSuccess
+
+    override suspend fun isSignRejected() = authPref.getBoolean(IS_SIGN_REJECTED, false)
+
+    override suspend fun getAccessToken(): Result<Token> {
+        val token = tokenDataSource.accessToken?.toDomain()
+            ?: return Result.failure(NullPointerException("Access token is null"))
+
+        if (!token.isExpired()) {
+            return Result.success(token)
+        }
+
+        return try {
+            val refreshToken = getRefreshToken().getOrThrow()
+            refresh(refreshToken).getOrThrow()
+            Result.success(tokenDataSource.accessToken?.toDomain()!!)
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
+
+    override suspend fun getRefreshToken(): Result<Token> {
+        val refreshToken = tokenDataSource.refreshToken?.toDomain()
+            ?: return Result.failure(NullPointerException("Refresh token is null"))
+
+        if (refreshToken.isExpired()) {
+            return Result.failure(Exception("Refresh token is expired"))
+        }
+
+        return Result.success(refreshToken)
+    }
+
+    override suspend fun signIn(code: String): Result<Unit> {
+        return runCatchingResponse {
+            authRetrofitService.signIn(SignInRequest(SOCIAL_TYPE, code))
+        }.onSuccessOrCatch { signInResponse ->
+            tokenDataSource.accessToken = signInResponse.accessToken.toEntity()
+            tokenDataSource.refreshToken = signInResponse.refreshToken.toEntity()
+        }
+    }
+
+    override suspend fun rejectSignIn() {
+        if (isSigned() || isSignRejected()) return
+        authPref.edit().putBoolean(IS_SIGN_REJECTED, true).apply()
+    }
+
+    override suspend fun signOut(): Result<Unit> {
+        return runCatchingResponse {
+            authRetrofitService.signOut(getAccessToken().getOrThrow().format())
+        }.onSuccessOrCatch {
+            tokenDataSource.accessToken = null
+            tokenDataSource.refreshToken = null
+        }
+    }
+
+    override suspend fun deleteAccount(): Result<Unit> {
+        return runCatchingResponse {
+            authRetrofitService.deleteAccount(getAccessToken().getOrThrow().format())
+        }.onSuccessOrCatch {
+            tokenDataSource.accessToken = null
+            tokenDataSource.refreshToken = null
+        }
+    }
+
+    private suspend fun refresh(refreshToken: Token): Result<Unit> {
+        return runCatchingResponse {
+            authRetrofitService.refresh(RefreshRequest(refreshToken.token))
+        }.onSuccessOrCatch { refreshTokenResponse ->
+            tokenDataSource.accessToken = refreshTokenResponse.accessToken.toEntity()
+        }
+    }
+
+    companion object {
+        private const val SOCIAL_TYPE = "KAKAO"
+        private const val AUTH_PREF = "auth_pref"
+        private const val IS_SIGN_REJECTED = "is_sign_rejected"
+    }
+}

android/festago/data/src/main/java/com/festago/festago/data/repository/FakeUserRepository.kt

@@ -0,0 +1,41 @@
+package com.festago.festago.data.repository
+
+import com.festago.festago.domain.model.token.Token
+import com.festago.festago.domain.repository.UserRepository
+import java.time.LocalDateTime
+import javax.inject.Inject
+
+class FakeUserRepository @Inject constructor() : UserRepository {
+
+    override suspend fun isSignRejected(): Boolean {
+        return false
+    }
+
+    override suspend fun isSigned(): Boolean {
+        return true
+    }
+
+    override suspend fun getRefreshToken(): Result<Token> {
+        return Result.success(Token("", LocalDateTime.now()))
+    }
+
+    override suspend fun getAccessToken(): Result<Token> {
+        return Result.success(Token("", LocalDateTime.now()))
+    }
+
+    override suspend fun signIn(code: String): Result<Unit> {
+        return Result.success(Unit)
+    }
+
+    override suspend fun signOut(): Result<Unit> {
+        return Result.success(Unit)
+    }
+
+    override suspend fun rejectSignIn() {
+        // handle reject sign in
+    }
+
+    override suspend fun deleteAccount(): Result<Unit> {
+        return Result.success(Unit)
+    }
+}

android/festago/data/src/main/java/com/festago/festago/data/service/AuthRetrofitService.kt

@@ -0,0 +1,33 @@
+package com.festago.festago.data.service
+
+import com.festago.festago.data.dto.user.RefreshRequest
+import com.festago.festago.data.dto.user.RefreshResponse
+import com.festago.festago.data.dto.user.SignInRequest
+import com.festago.festago.data.dto.user.SignInResponse
+import retrofit2.Response
+import retrofit2.http.Body
+import retrofit2.http.DELETE
+import retrofit2.http.Header
+import retrofit2.http.POST
+
+interface AuthRetrofitService {
+    @POST("api/v1/auth/login/oauth2")
+    suspend fun signIn(
+        @Body signInRequest: SignInRequest,
+    ): Response<SignInResponse>
+
+    @POST("api/v1/auth/refresh")
+    suspend fun refresh(
+        @Body refreshRequest: RefreshRequest,
+    ): Response<RefreshResponse>
+
+    @POST("api/v1/auth/logout")
+    suspend fun signOut(
+        @Header("Authorization") token: String,
+    ): Response<Unit>
+
+    @DELETE("api/v1/auth")
+    suspend fun deleteAccount(
+        @Header("Authorization") token: String,
+    ): Response<Unit>
+}